Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John M. Derfelt, DNP, APRN, FNP-C

Individual provider Family Nurse Practitioner · NPI 1912377862

John M. Derfelt, DNP, APRN, FNP-C is a Nurse Practitioner in Joplin, Missouri. Qualified in 2015, 11 years ago. Practices with Green Country Emergency Physicians Group of Tulsa, PLLC, a 109-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
11
Licensed in
MO
In the registry since
2015
What do these letters mean?
DNP — Doctor of Nursing Practice
The highest clinical degree in nursing.
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
FNP-C — Family Nurse Practitioner, Certified
A family nurse practitioner certified by the AANP.

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Practice location Address checks out

100 Mercy Way
Joplin, MO 64804-4524
Phone: (417) 556-2300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 2015035372 (MO)

Record details

NPI number1912377862
Entity typeIndividual (Type 1)
GenderMale
Credentials DNP , APRN , FNP-C
Sole proprietorNo
NPI enumeratedOctober 5, 2015
Last updated in NPPESDecember 18, 2019
Certification dateDecember 18, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Green Country Emergency Physicians Group Of Tulsa, Pllc — 109 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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